Parts of apparatus and instruments of scientific and analytical liquid phase handling devices, namely, structural parts of chromatographs such as liquid chromatographs, namely, chromatography columns, connectors for capillary tubes, structural fittings for capillary tubes for samples, liquid lines, adapters for capillary tubes and liquid lines, capillary tubes, liquid chromatography injectors and connecting elements for capillary tubes and liquid lines; structural accessories and components o...